197900199 has 32 divisors (see below), whose sum is σ = 337559040. Its totient is φ = 112245696.

The previous prime is 197900191. The next prime is 197900231. The reversal of 197900199 is 991009791.

It is not a de Polignac number, because 197900199 - 2³ = 197900191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197900191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22072 + ... + 29714.

It is an arithmetic number, because the mean of its divisors is an integer number (10548720).

Almost surely, 2^197900199 is an apocalyptic number.

197900199 is a deficient number, since it is larger than the sum of its proper divisors (139658841).

197900199 is a wasteful number, since it uses less digits than its factorization.

197900199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7796 (or 7790 counting only the distinct ones).

The product of its (nonzero) digits is 45927, while the sum is 45.

The square root of 197900199 is about 14067.7005583713. The cubic root of 197900199 is about 582.7497246280.

The spelling of 197900199 in words is "one hundred ninety-seven million, nine hundred thousand, one hundred ninety-nine".